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Octa-coordinated alkaline earth metal–dinitrogen complexes M(N2)8 (M=Ca, Sr, Ba)

Author

Listed:
  • Qian Wang

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Sudip Pan

    (Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University)

  • Shujun Lei

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Jiaye Jin

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Guohai Deng

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Guanjun Wang

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Lili Zhao

    (Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University)

  • Mingfei Zhou

    (Shanghai Key Laboratory of Molecular Catalysts and Innovative Materials, Fudan University)

  • Gernot Frenking

    (Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University
    Philipps-Universität Marburg)

Abstract

We report the isolation and spectroscopic identification of the eight-coordinated alkaline earth metal–dinitrogen complexes M(N2)8 (M=Ca, Sr, Ba) possessing cubic (Oh) symmetry in a low-temperature neon matrix. The analysis of the electronic structure reveals that the metal-N2 bonds are mainly due to [M(dπ)]→(N2)8 π backdonation, which explains the observed large red-shift in N-N stretching frequencies. The adducts M(N2)8 have a triplet (3A1g) electronic ground state and exhibit typical bonding features of transition metal complexes obeying the 18-electron rule. We also report the isolation and bonding analysis of the charged dinitrogen complexes [M(N2)8]+ (M=Ca, Sr).

Suggested Citation

  • Qian Wang & Sudip Pan & Shujun Lei & Jiaye Jin & Guohai Deng & Guanjun Wang & Lili Zhao & Mingfei Zhou & Gernot Frenking, 2019. "Octa-coordinated alkaline earth metal–dinitrogen complexes M(N2)8 (M=Ca, Sr, Ba)," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11323-5
    DOI: 10.1038/s41467-019-11323-5
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